The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 1992
Filed:
Jul. 22, 1991
Applicant:
Inventor:
Donald L Parker, Middletown, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T / ; F15B / ;
U.S. Cl.
CPC ...
605471 ; 60581 ; 60591 ; 60593 ; 9137 / ;
Abstract
A hydraulic booster for a vehicle brake master cylinder having a power piston with only one large diameter sliding seal which is exposed to a high hydraulic pressure. This provides a brake booster having lower hysteresis.